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drop vmerge accounting

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Remove hw_segments field from struct bio and struct request. Without virtual
merge accounting they have no purpose.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Mikulas Patocka 2008-08-15 10:20:02 +02:00 • committed by Jens Axboe
commit 5df97b91b5
8 changed files with 6 additions and 69 deletions
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7
include/linux/blkdev.h
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@ -189,13 +189,6 @@ struct request {
*/
unsigned short nr_phys_segments;
/* Number of scatter-gather addr+len pairs after
* physical and DMA remapping hardware coalescing is performed.
* This is the number of scatter-gather entries the driver
* will actually have to deal with after DMA mapping is done.
*/
unsigned short nr_hw_segments;
unsigned short ioprio;
void *special;